Preparation Technology of High-strength and High-toughness Lightweight Aggregate Concrete

摘要：

The preparation technology of high-strength and hightoughness lightweight aggregate concrete (HSTLC) was investigated. The effect of the ratio of water to cementitious materials (w/c), mixing technology and fiber content on the compressive strength, flexural strength and splitting tensile strength were investigated. The results showed that compressive strength of lightweight aggregate concrete decreased with increasing w/c, and there exist an inflection point on the curve of w/c-compressive strength, w/c=0.23. The interface enhance technology can increase the strength of lightweight aggregate concrete. And the adding macro polypropylene (PP) fiber to lightweight aggregate concrete significantly improves the flexural strength, splitting tensile strength and brittleness. The use of macro PP fiber has a little contribution to compressive strength and flexural strength of concrete but a great influence on splitting tensile strength, and the splitting tensile strength increased with increasing the fiber content.

关键词： lightweight aggregate concrete macro polypropylene(PP) fiber mixing technology strength toughness

作者: S.G. Hu J. Wu F.Z. Wang

作者单位: Key Laboratory for Silicate Materials Science and Engineering of Education Ministry, Wuhan University of Technology,Wuhan, 430070, China

会议类型: 国际会议

会议名称: The 7th International Symposium on Cement & Concrete(ISCC2010)、The 11th International Conference on Advance in Concrete Technology and Sustainable Development(第七届水泥与混凝土国际会议暨第11届混凝土技术可持续发展国际会议)

会议地点: 济南

会议语种:英文

页码: 1130-1136

在线出版日期: 2010-05-09（万方平台首次上网日期，不代表论文的发表时间）